Shaft-securing device.



E. H. DIMLER; I SHAFT SECURING DEVICE.

APPLICATION FILED OUT. 89, 1909.

966,666. Patented Aug. 9, 1910.

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ERNEST H. DIMLER, OF SOUTH. BETHLEHEM, PENNSYLVANIA, ASSIGNOR 0FONE-HALE TO BETHLEHEM FOUNDRY 86 MACHINE COMPANY, OF SOUTH BETHLEHEM,PENN- SYLVANIA, A CORPORATION OF PENNSYLVANIA.

SHAFT-SECURING DEVICE.

Specification of Letters Patent.

Patented Au. 9, 1910.

To all whom it may concern:

Be it known that I, ERNEST H. DIMLER, a citizen of the United States,residing in the city of South Bethlehem, county of Northampton, State ofPennsylvania, have invented a new and useful Shaft-Securing Device, ofwhich the following is a specification.

The purpose of my invention is to provide a novel secure and simple formof attachment between the shaft and ball and trunnion of a Griffin mill.

A further purpose of my invention is to provide a form of the quick andeffective support for a shaft subject to motion other than that ofrotation.

A further purpose of my invention is to make the angular motion of theshaft of a Griflin mill assist in securing the shaft in place.

A further purpose of my invention. is to cause the twisting movement ofa Griffin mill'to set an eccentric in its support at the same time thatthe shaft itself has direct thrust support against downward movement.

It further consists of other novel features of construction, all as willbe hereinafter fully set forth.

For the purpose of illustrating my invention, I have shown in theaccompanying drawings one form thereof which is at present preferred byme, since the same has been found in practice to give satisfactory andreliable results, although it is to be understood that the variousinstrunientalities of which my invention consists can be variouslyarranged and organized and that my invenion is not limited to theprecise arrangement and organization of these instrumentalities asherein shown and described.

Figure 1 is'a top plan View of one form of my invention. Fig. 2 is asection upon line. w-zr, of Fig. 1.

Similar numerals of reference indicate corresponding parts in thefigures.

'Referring to the drawings z-My invention makes use of the torsionalstrains upon the shaft of a Griffin mill to more effectively engage theshaft with the ball and trunnion support thereof and provides directthrust support in the ball with a removable member which also is itselfin direct thrust engagement with a portion of the shaft.

For the reason that the ball and trunnion support for the shaft and theshaft itself are the only parts affected by my invention and that myinvention is applicable to structures having great variety as to otherfeatures than the shaft and support thereof, I have considered itunnecessary to illustrate more than the ball, trunnion, shaft andconnecting members.

1 designates a shaft to be mounted, a support, here shown as the ball 2connected with trunnions' 3 and 4. For convenience in passing the shaftup through the ball to permit access to the upper part of the shaft Iform the portion of the shaft intended to lie in the cylindrical bore 5within the lower part of the ball as an enlargement 6 upon the shaftmaking a suitable sliding fit within this bore 5. I preferably form theupper end of the shaft with a head at 7 which may be of the samediameter as the portion 6 and which is preferably of this size in orderthat the'shaft may have as large a head as possible and yet may bewithdrawn downwardly through the ball and trunnion. In structuresotherwise rendering it unnecessary to take the shaft out downwardly andin which the eccentric locking feature is desired, this cap may be ofenlarged diameter.

Between the cylindrical portions 61 and 7 I form a neck at 8 eccentricthereto, re sulting in shoulders at 9 and 10 for a purpose to behereinafter described.

I provide a cylindrical enlargement or counterbore 11 within the upperportion of the ball which is eccentric to the cylindrical bore 5, whichbore and counterbore 11 are parallel with each other just as the axes ofthe cylindrical portions 6 and 8 of the shaft are parallel, thougheccentric to each other.

I form the counterbore preferably with the same degree of eccentricityto the bore 5 as that of the neck 8 to the cylindrical portion 6 inorder that in a certain position annularly with respect to the ballthere may be room between the neck and the counterbore for a cylindricalsleeve of uniform thickness, which sleeve I have indicated as split intotwo parts 12 and 13 for convenience of application to the shaft. Thissleeve agrees in internal diameter with the neck of the shaft and inouter diameter with the bore of the counterbore and rests when in placeupon the shoulder 14, between g the ball tightens the shaft within theball.

- use and form of motion which is made use the locking of the cam oreccentric afiect the bore and the counterbore. The sleeve, in turn,gives direct thrust support to the shoulder 10 under the cap end of theshaft.

Where the eccentricities of the bore with respect to the counterbore andthe portion 6 of the shaft with respect to the neck are not alike it mayevidently be equalized by forming the hole in the collar eccentric tothe circumference of the collar by an amount corresponding to thedifierence. I provide a thread 15 for the purpose of admitting a screweye by which the shaft may be supported.

In assembling my shaft within the ball and trunnion I pass the shaft upthrough the ball until the neck 8 is freely accessible, when I place thesleeve upon the neck and turn the shaft until the sleeve thuseccentrically placed coincides with the counterbore. I thus pass theshaft with the sleeve upon it down into the bore and counterbore of theball until the lower part of the sleeve rests upon the shoulder v14L.The head or cap of the shaft is at the same tnne supported upon theupper portion of the sleeve, each of these supports being by directthrust. A slight rotation of the shaft with respect to It will beevident that the character of support within which the shaft is to beheld may be varied and that the relation of the several sizes andpositions of the parts may also be changed in the shaft for differentuses and to suit the convenience and judgment of different intendingusers. It is also evident that the rotary motion by which portions ofthe shaft is accomplished may be put into effect by otherinstrumentalities manual or machine than by the particular of in theGriffin mill. It is my desire and intent to cover such severalvariations in construction and use of the structure as properly fallwithin the scope of the claims of my application.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

1. In a device of the character stated, a ball having a bore and acounterbore therein axially out of line with each other in combinationwith a shaft fitting the bore and having a reduced neck axially out ofline therewith, and a cylindrical collar engaging said neck and fittingWithin the counterbore.

' 2. In a device of the character stated, a 1 ball having a bore and acounterbore therein axially out of line with each other in combinationwith a shaft fitting the bore and having a reduced neck axially out ofline with said shaft, and a cylindrical split ring fitting upon thereduced neck and fitting into the counterbore.

3. In a device of the character stated, a ball having a cylindrical boreand counterbore therein axially out of line, in combination with acylinder, a shaft, and means for fastening said cylinder upon the shaftwith the axis of the cylinder out of line with the axis of the shaft tothe same extent as the axis of the counterbore is outside the axis ofthe bore.

4. In a deviceof the character stated, a ball having a cylindrical borein the lower part thereof and a cylindrical counterbore in the upperpart thereof axially out of line with the bore and providing a shouldertherebetween in combination with a shaft having a cylindrically reducedportion axially out of line with the rest of the shaft, forming a headenlarged with respect to said reduced portion and providing a shoulderbeneath said head and a cylindrical split sleeve mounted upon thereduced portion of the shaft, resting upon the shoulder between the boreand counterbore and supporting the shoulder upon the head of the shaft.

5. In a device for fastening shafts, a support having a bore andcounterbore, a shaft having a portion eccentric to the axis of saidshaft, a head upon the shaft, and a sleeve surrounding said eccentricportion and fitting the counterbore.

6. A shaft, having a portion thereof eccentric thereto and wholly withinthe cylinder defined by the surface of the shaft, a head upon the shaft,and a member having a bore fitting the shaft, and a counterbore, incombination with a sleeve surrounding the eccentric portion of the shaftand fitting the counterbore.

7 A shaft eccentrically reduced at an in- 'termediate point and therebyproviding a head and a shoulder at the limits of the reduced portion, amember to be connected therewith provided with a bore and a counterboreforming a shoulder between, and a divided collar about the eccentricportion of the shaft lying between the two shoulders.

8. In a device of the character stated, a ball and trunnion, a shafttherein, and means bet-ween the ball and trunnion and shaft eccentric tothe axis of the shaft supporting the shaft and causing wedge engagementbetween it and the ball and trunnion with relative torsional movement.

ERNEST H. DIMLER.

W'itnesses:

ROBERT W. FLUOK, EDWIN J. Stratum.

